diff --git a/app/uploaders/file_uploader.rb b/app/uploaders/file_uploader.rb
index 581d111..c544479 100644
--- a/app/uploaders/file_uploader.rb
+++ b/app/uploaders/file_uploader.rb
@@ -65,9 +65,9 @@ class FileUploader < CarrierWave::Uploader::Base
 
   # Add a white list of extensions which are allowed to be uploaded,
   # for images you might use something like this:
-  #     def extension_white_list
-  #       %w(jpg jpeg gif png)
-  #     end
+       def extension_white_list
+         %w(jpg jpeg gif png bmp tiff)
+       end
 
   # Override the filename of the uploaded files
   #     def filename